Dynarex 60 cc Piston Irrigation Syringe have a precision crafted o-ring that ensures a positive seal, finger rests provide extra control for ease of use. Markings are calibrated in ounces as well as cubic centimeters. Piston irrigation syringe comes with a removeable tip cap. Dynarex 60 cc piston irrigation syringes are easy to use one handed. Sold by the each and the case of 50.